The Anthropic small-model dispatch (session-assist recap/suggestion, walkthrough, etc.) hardcoded https://api.anthropic.com/v1/messages, ignoring provider.anthropic.options.baseURL — the same override every other provider branch already respects. Any setup routing the anthropic provider through a local proxy (e.g. Meridian for Claude Max / Vertex) had the small-model call bypass the proxy and hit the real Anthropic API with whatever placeholder credential the proxy config uses, failing with 401 invalid x-api-key on every call.